On-Premises Phone
Systems and Hardware
A Phone System to Fit Your Business
Have questions about On-Premises vs Hosted Phone Systems? See our guide to cloud-based vs on-premises PBX phone systems.
With an on-premises system, you purchase the telephone system hardware, networking and server equipment necessary to run your phone system. This equipment lives “on site”.
Your calls are routed through a traditional phone company as well as through VoIP using SIP trunking. You purchase the telephone system equipment and bundled installation, and we configure, install, train and maintain this system for a low annual fee.
Have questions about On-Premises vs Hosted Phone Systems?
See our guide to cloud-based vs on-premises PBX phone systems.

Personalized Service, Ready When You Need It
System Backbone
UNIVERGE SV9100
The UNIVERGE® SV9100 platform is a new system, with new handsets and new applications to empower your workforce. Built on the back of the award winning SV8100 technology, the SV9100 provides double the system capacity, yet remains cost effective from 10 to over 800 users.

The UNIVERGE SV9100 offers
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Distinct, scalable, IP Unified Communications enabled solution
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High reliability
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Simplified user licensing
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Comprehensive suite of Unified Communications and Contact Center solutions
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Broad range of mobility applications and devices
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Vertical market-specific solution integrations
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Wide-range of end-points
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Single point configuration and management
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Multi-Line SIP client, multi-carrier support
Advanced Features
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Versatile architecture – works as an IP system, digital system or a combination of the two
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Modular architecture for exceptional scalability – cost effective from 10 to 800+
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One of the most easily configured Unified Communications systems on the market
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User-friendly management interface streamlines system administration
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Easy migration from UNIVERGE SV8100 and SV8300
Downloads
UNIVERGE SV9100: Brochure | Data sheet
Reinvent the Desktop Telephones
- Decades of Experience
Our certified technicians bring decades of hands-on expertise to maintain, repair, and upgrade your PBX systems with precision. - Bridge to the Cloud
Seamlessly maintain your system while transitioning to a hosted PBX with Intermedia Unite. - Intermedia Hardware Sales
Get genuine Intermedia hardware and included support. - Upgrade to SIP Trunks
Modernize your existing Intermedia PBX by using an internet connection to route calls. Save money with reduced long-distance, toll-free, and international calling rates.
We'll Help You Navigate
Interwest provides leading edge telephone system products and services to ensure that your voice communications are reliable, accessible, and effective.
We understand that no two people – or businesses – are alike. People communicate in different ways according to their unique roles. We focus on bringing together a variety of applications to streamline communication and to improve efficiency.
Interwest Communications provides a solid, stable, and scalable product line with an unmatched level of customer service and support by highly trained professionals.
We will provide a phone bill audit at no charge for all of our new customers, in order to examine how we can decrease your monthly telephone service expense. Then we will handle the legwork to make any necessary changes to your account.
There are many great options for technology and phone systems that might fit your business.
We are happy to help as you navigate the options to select the best system for your communications.
Give us a call at (509) 663-1900.
Benefits Of Working With Our Team

✓ 24/7 technical support
✓ Local techs based in Eastern Wash.
✓ Guaranteed response times
We provide a solid, stable, and scalable product line with an unmatched level of
customer service and support by highly trained professionals.
We’re there when you need help. Our local technicians can assist 24/7, whether that
means a visit out to your location or just a quick phone call.
Request a QuoteFill out the form below to send us a message or quote request.
A knowledgeable account manager will respond to your inquiry within 24 hours.
Trying to figure out what systems will best protect your assets? Request a quote and a knowledgeable account manager will respond to your inquiry within 24 hours.
✓ Local Service & Support
✓ Free Assessment
✓ Guaranteed response times
✓ Clear Pricing
WORKING WITH INTERWEST COMMUNICATIONS
We are a family-owned technology corporation that believes in doing things right the first time
Assure confidence in every phase of the buying, installing and implementation process.
Maximize each customer’s return on investment (ROI).